Now let’s consider two possible scenarios. In one scenario, the subject is moderately shocked 500 times (each shock being cured and wiped from memory before the next shock). In another scenario, the patient is severely shocked once (with one shock cured and wiped from memory). Which one is worse? While there may be more aggregate pain occurring across time in the first scenario, the pain that is actually felt is greater in the second scenario. The sum of 500 shocks occurs but is not experienced while the excruciating shock is actually experienced. If I were the subject, I would want to reduce the severity of my first-person experience rather than a discontinuous third person aggregation even though I leave the experiment unharmed in both scenarios. 

Why are the 500 shocks considered to be not experienced but the excruciating shock is considered to be actually experienced, if in both scenarios the memory is wiped? 

This is a really succinct and powerful post, I’ve saved it to use as a reminder and motivator.

Thank you.

Apologies on this, we've fixed it now.